When we stand between a pair of parallel plane mirrors, we can see an infinite number of images.

A concave mirror can never form a virtual image of an object.

We can use either a concave mirror, or a convex mirror, as the reflector in torches.

Motor vehicles generally use either a plane mirror, or a convex mirror, as their 'rear view' mirror.

The angle of incidence equals the angle between the incident ray and the _____. 

A ray of light, falling normally on a plane mirror, gets reflected in such a way that it _____.

The central point, of the section of the sphere, used for making a spherical mirror, is known as the _____.

The distance between the object and its image in a plane mirror is $6 \mathrm{m}$. If the object moves $1 \mathrm{m}$ towards the mirror then the new distance between the object and its image will be _____.

The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of $4 \mathrm{m}/\mathrm{s}$. The driver sees, in his rear view mirror, the image of a scooter parked behind his car. The speed, at which its image appears to approach the driver, will be